I'm building a 1/12th scale USS Holland submarine In 304 stainless steel and 342 brass.The symmetrical hull will be lathe spun In 304 stainless steel and the superstructure will be made from flat sheets of stainless steel.The conning tower,hatch and fittings will be made out of 342 brass.I am building brush-less motorized piston ballast tanks with stainless steel cylinders.
Regards,
John